JPS58170184A - Recording system of digital signal - Google Patents

Abstract

PURPOSE:To change a static picture into another with no disturbance of picture quality, by recording the audio signal of the aural information to a recording medium in time series and together with the digital audio signal obtained through a digital pulse modulation. CONSTITUTION:The analog audio signals of three channels are supplied separately through terminals 30, 31 and 32 respectively. These audio signals contain the centralsound image positional signals to ensure the normal position of the real image of a central sound source and the extension of the hearing range. A signal processing circuit 37 rearranges a parallel data of input digital signals of 16 bits and 4 channels in all and control signals into a serial data. At the same time, the circuit 37 divides the digital signal of each channel for each prescribed section and then gives the interleaving and time division multiplexing to these sections. Then an error code correcting signal, an error code detecting signal and a synchronizing signal bit showing the initiation of a block (frame) are added to produce a recording signal.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a digital signal recording system), in which a digital video signal of an analog video signal tube digital pulse modulation regarding color still image information is converted into a digital video signal of a gain/loss component coding system, and a digital audio signal which is the main information. When chronologically combining signals and recording them on a disc-shaped recording medium, it is easy to perform scan-to-number conversion, and it is possible to gradually reduce the display area of a still image displayed on a tube. By doing so, it is possible to gradually increase the display area of another still image at a time and finally display another still image in a visually favorable manner without deteriorating the image quality, and moreover, due to the time lag of data. It is an object of the present invention to provide a system capable of recording in a signal format with less disturbance of a reproduced IIIi image.

In recent years, video signals and audio signal tube pulse signals 1
The resulting digital video signal ↑ digital audio signal is recorded on a disc-shaped recording medium (hereinafter referred to as "disc") as a change in an intermittent bit string by changing a decimal pulse such as VIA (PC!M).

Strong F light from the disc! Systems are being actively developed to read and reproduce existing device signals by detecting jL changes or capacitance changes. Among these, there is a known method for recording digital audio discs in which a digital video signal related to color still image information is added as additional information to a digital audio signal and recorded on the same track on the disc. Normally, 10 grams of music is recorded on the same side of such a digital audio disc, and digital video signals related to color still image information are recorded corresponding to each music program, but when this disc is played back, In this case, music tourograms can be played using a universal playback system.

On the other hand, since the television system for playing back video signals is not universal, KFs, video There is a membership fee for converting the signal into a signal format compliant with the television system of the region or region where the signal is to be reproduced and displayed. In particular, since the above-mentioned digital video signal is related to the digital audio signal (color still images that play an auxiliary role to aid the listener's imagination), the above-mentioned disc is the world's television It is desirable to adopt a universal system regardless of the differences in the system, and to reproduce it in a signal format that complies with each television system.

By the way, the color television system in the world is based on color signal transmission type 11J) NT8C! , PAL f
The king of SEOAM can be broadly divided into many people. The horizontal travel frequency UNTSC is 11135.4KH
2゜PAL system and 8EOAM system are mainly 15,6
The frequency is 25 KHz, and both have an ri O of 7%, so the difference is not a big problem. The number of scans and the number of vertical scans rfL are -N, 'rSC is 525 lines.

5B, fi4 Hg, PJL Banshiki and SKOAM
The method is mainly different from 625 lines and 50HsI. For this purpose, the scanning line number tube 52 of the video signal to be recorded is
When kojic acid is applied to 5 lines, the number of scans is 16 when playing back a video signal based on the PAL system or 7ROAM system.
Because there is a necessary cost to increase the number to 25, there is a lack of information.

Therefore, to ensure that there is no lack of information, scan-
It is desirable to record a video signal processed by 1125 lines.

In this case, it takes time to separately transmit one frame of a video signal with 625 scanning lines, and to store it (memory).
The capacity of the memory circuit with the number of scanning lines is 52@* (compared to that of the D video signal). However, in terms of the increase in transmission time, the above video signal plays an auxiliary role as described above. Regarding static and image information that fulfills T.
ol>, it is preferable to not change for a reasonable period of time rather than to change rapidly, and therefore the approximately 20% increase in transmission time is not a problem.

-1. Regarding the capacity amplification port of the frame memory circuit mentioned above, when converting to a 6H video signal tube with 525 scanning lines in order to obtain a reproduced video signal compliant with the PAL system or the 81 [ioAM system], However, such an effect cannot be expected when obtaining a reproduced video signal conforming to the NTSO standard. However, since the video signal related to still image information is transmitted at low speed, the scanning line number conversion circuit required to obtain the NTSO playback video signal can be operated at low speed, so the frame number is transmitted more than necessary. There is no need to increase the capacity of the circuit now.

In addition, if a digital video signal obtained by digitally modulating an analog video signal of the first television system is recorded on a disk and this is to be reproduced as an analog video signal of the television system of flL2, the applicant should first It is conceivable to set the reading speed of the memory circuit at a predetermined speed to obtain a digital video signal of a predetermined sampling frequency and then pass it through a DA converter, as proposed in No. 511-48700, but it is complicated. Furthermore, when the first television system is the NTEIO system, there are problems in that the luminance signal frequency band is limited and the vertical resolution is reduced, leading to deterioration of the reproduced image quality.

Therefore, in order to solve this problem, the applicant first requested
In No. 139tIr of 1983, a color still video signal tube luminance signal and two color difference signals (B-Y) and (R-Y)
Each of these signals is digitally pulse modulated separately, and the three types of digital video signals are transmitted sequentially in time series. A digital signal recording method based on component coding method is proposed.

However, in the digital signal recording method proposed by the present applicant, the digital luminance signal for one frame (or one field) is recorded, and then the digital luminance signal for one frame (or one field) is recorded. The first digital color difference signal (for one word) is recorded, and the second digital color difference signal is subsequently recorded. When attempting to switch the displayed static ligI at time t, the luminance information of the still image is switched one screen, one minute, and the two types of color information are sequentially switched one screen at a time.] There are 55 problems that are unsightly.

The present invention solves the above-mentioned problems and is a recording system that can suitably convert the number of scanning lines, etc., and an embodiment thereof will be described below with reference to the drawings.

FIG. 1 shows a block system diagram of an embodiment of the main part of the system of the present invention. On the same plane, 1 is a color television camera and a flying spot scanner.

A video signal source such as a VTR is supplied with a TV synchronization signal from a TV synchronization signal generator 2 as necessary, and three primary color signals relating to a color still image to be recorded are woven and supplied to a matrix circuit 3. Matrix circuit 3 has 6 scanning lines
25 horizontal runs fI! B' wave number゛15.625KHz
mi signal Y, color difference signals (B-Y) and 1-Y), and separately supply these to A'D converters 4.5 and 6, respectively. On the other hand, the output TV of the TV synchronous signal +5 generator 2
11!Is the 1st period signal a clock generator? , 8. "1"
2 and 13, respectively.

ADf converter 4-digit band S MHII luminance signal Y,
The signal is sampled at a sampling frequency of 12MH2 using a 12MHg clock from the clock generator 7, then quantized, and this signal is supplied to the memory. AD converter SFi takes into consideration the well-known human visual characteristics and converts the -10,000 color difference signal (B - Y) from the clock generator - 3M
HS! sampling station tltljt based on the clock signal of
After sampling with 3M11g, it is quantized with a quantization number of 8 bits and converted into a digital color difference signal, and this signal is stored in memory 10.
Supply 4C. The AD converter 6 preferably receives the color difference signal (R-
Y) is connected to AD converter 5 and IW141KII based on the clock signal from clock generator S.
ng, into an 8-bit digital color difference signal, and this signal is supplied to the memory 11.

The memory s writes the above-mentioned digital luminance signal "Ikl frame amount" by the output pulse of the memory write controller 12, and performs a set-up operation (by the cutting pulse of the memory read controller 14).

The digital luminance signal supplied to this memory has one scanning line and, for example, 608 sample points (horizontally, 1,000,000).
When the KHg luminance signal is sampled at a sampling frequency of 12MH2, the number of sampling points for one scanning line is 76 hatake (=12X10
'/Is@25) can be obtained, but among the video signals shown in gzm in units of horizontal scanning periods, the video period VT containing the actual @Kw# image information is approximately moss of one horizontal scanning period (1H), and the other , horizontal, -1 synchronization signals and color burst signals can be added in the h-production device, so it is assumed that digital luminance signals of 60 sample points in the video period VT are supplied to the memory. Also, the digital luminance signal output from this memory is 6
This is a digital luminance signal for 512 scanning lines including the image information tube out of the 2 scanning lines, and furthermore, for the reason described later, the sampling frequency L number is 94 SKHz (also U1
18.2KHI), and the quantization number is 8 bits.

Also, the memory 10. The digital color difference signal for one frame is immediately loaded based on a write side control signal from the IIH memory write controller 13, and the stored data is read out by the output pulse of the memory read controller 4. Since the sampling frequency of the digital color difference signal supplied to the memo 1310.11 is 1 MHs1, which is the minus of that of the digital luminance signal, the number of sampling points for each scanning line is 152 (=■・/4). digital signals],
This is the sampling frequency of 47.211KHs (also t! 44
．． IKHI), which is read out as a digital signal with a quantization number of S bits. Further, the digital color difference signals of Rattan 1 and Rattan 2 read out from the memory 10.11 relate to the digital luminance signal and the same 11KsTz scanning line information.

Furthermore, each of these digital signals is the digital information of the one scanning line located at the top of the screen (HIH of the f/s1 field) among the 572 scanning lines, which is located second from the top of the screen. One scan line (first line of $2 field)
H-th) digital information, one scanning line blindly placed third from the top of the screen (digital information of the first field, one scanning line fourth from the top of the screen) (2nd H of 1s2 field) digital information,
0. In this way, nine pieces of digital information are synthesized in sequence in the order of the scanning lines that appear on the screen. This is to make it easy to convert the number of scanning lines from 05 to s2s, taking into account all aspects as will be described later.

Sampling frequency 141KHz extracted from memory
(also FiII@, 2KHz), digital luminance signal with quantization number of 8 bits, sampling frequency read from memory 10 47.25KHz (or 441Klliii)
, a digital color difference signal of JIT with a quantization number of 8 bits, and a sampling frequency of 4721K read out from the memory 11.
The second digital color difference signals of HI (or 44.11 CHg) and quantization number S bits are respectively supplied to the switching circuit 1s.

On the other hand, the input terminal 16 records the static signal switching]
Signals and the like generated at each time are input and supplied to the identification haiku code generator 11. The identification signal generator 11 generates an identification signal 21 consisting of a total of 16 bits, as shown in FIG. 3, and supplies this to the memory IIK. The identification signal taken out from the memory 1@ is supplied to the switching circuit 15. Here, the identification signal is, as shown at 21 in Fig. 3, an 8-bit Gageiko-go-separation code 22, a 1-bit Gagei-Ko-separation identification code 23, and 2
A bit picture type and iron code 24, a 2-bit effect type identification code 25, an effect time identification code 2-, and 1
The bit parity code is 27, and the bit shown at the top in the island 3 diagram is M8B. These codes 22~
Of the 27, the image honor identification code 22 is a code for identifying whether it is a still image of the honor mark from the start of recording among the plurality of still images recorded on the same surface of the disc. Since it is 8 bits, it is possible to identify the wisdom code in 25@11 still images.

In addition, as in the digital signal arrangement system previously proposed by the present applicant in No. 41M 1985-161234, regarding the color still image information to be recorded, the digital luminance signal, the first and second digital signals, etc. A first digital video signal obtained by chronologically synthesizing color difference signals is further chronologically combined with an lE2 digital video signal relating to the same color still image information, but with an information amount compressed to -. In the case of a transmission device, since both the first and second digital video signals relate to the same color still image, the image number identification code 22Fi is selected to be a value indicating the same color still image. Here, the second digital video signal is, for example, a video signal for one field of color still image information as a luminance signal and a color difference signal (B-Y).
, (R-Y), and digital pulse modulation of the luminance signal, the digital luminance signal has a sampling frequency of gMHz and a quantization number of 7 bits, and the sampling frequency is 11.
45KHII (also t!lIIL2KHsg) with a quantization number of 8 bits, color difference signals (B-Y) and (R-Y)
Sampling frequency 1 obtained by digital pulse modulation, respectively.
Two types of digital color difference signals, SMHg and quantization number T bits, are further sampled at a sampling frequency of 47.25 KHz (also t;
44. LKHz), is synthesized in i-series with the digital color difference signal obtained by converting to 8-bit quantization.

This single number identification code 22 is a digital luminance signal and two types of digital color difference signals that constitute the first and second digital video signals, respectively, in one frame or one frame.
In both the case where one field is transmitted sequentially, and the uninvented case where it is transmitted sequentially every 1H or several H, if both relate to the same color still image, the same color still image is transmitted. This allows not only the digital video signal of wL1 for a normal color still image to be displayed, but also the compressed second digital video signal of the same picture number. When a signal is transmitted, it is recommended that the first digital video signal transmitted first be captured into the memory circuit in the playback device, and that the second digital video signal should not be marketed. Or, conversely, if the first digital video signal cannot be interspersed for some reason, the second digital video signal can be interspersed into the memory circuit. ni l
The image building identification code 23 shown in 11- indicates whether the digital video signal to which the identification signal having this code 23 is attached is the above-mentioned first digital video signal or the above-mentioned second digital video signal. This is a code to identify whether the

In addition, the image type classification code 24t;t requires continuity of display for the image of the digital video signal, and in the middle of display, another woodcutter's thi4I/! When it is inconvenient to switch to 11a (for example, music, scenery, illustrations, performers, etc.),
This is the code for classifying the image. Furthermore, the effect type alk iron code 2s is a code for identifying whether the fade-in or screen change trap is performed from the top or the left. Time identification code 2 of Dantara effect
6 is a code related to the time when the above-mentioned physical effect (fade-in, screen change) is recorded and finished, and the playback device distinguishes this code 26 and calculates the time indicated by code 2. It operates so that the special effect ends.

Parity code 2Td or above each code 22°23.24
．． The result of parity check for 1s bits consisting of 21 and 2 is shown below.

The above S-component identification signal 21 is stored in the memory 18 at a sampling frequency of 4L2SKHz (also Fi44, t KHts),
As a digital signal with a quantization number of 1@bit, the switching times shown in Figure 1 are 1i%1! iK supplied. The switching circuit 1s switches each digital signal from the memory, 10.11, and 18 in a predetermined order, and adds a first-term signal from a synchronization signal generation circuit (not shown) to the 41st iliOK.
A digital video signal having a signal format as shown is outputted and supplied to a digital recorder 1@, where it is recorded. Note that a read control signal is output from the memory read controller 14 in synchronization with the clock signal from the digital recorder 1s.

Figure 4 shows 5 lines containing actual information on one of the 825 scanning lines.
Digital video signals in 12 scanning lines and synchronization signal 211! L, 28b, and identification signals 21a to 2ta
An example of a digital video signal format for one frame is shown below. The digital video signal is sequentially recorded and reproduced frame by frame. In Figure 4, the vertical direction shows the bit array, and the upper part shows the MO
B (most significant bit), and the lower side indicates 18B (least significant bit). Also, the horizontal direction indicates time, and T is the unit time, which is the reciprocal of the sampling frequency 47.2jKHg (also a441KHs)? 6 about 21.2μsec (or about 22.7/jse
Hereinafter, 16-bit data in this unit time T will be referred to as one word.

At the beginning of one frame of the digital video signal, rounded synchronization signals 21&, 2.b indicating the start are placed. The value of the synchronization signal 2h shown in Diagram 4 [0000J and the synchronization signal H
The value 11'61 @J in 1) indicates the value in hexadecimal notation. Therefore, when expressed in binary, all 16 bits of the synchronization signal 28a are rOJ, and the synchronization signal 2sbti[000101
It is 100G0.10110J. -Synchronization signal 211a
, 211b, the nine configurations of identification signals shown in FIG. 1113 are repeated twice as shown by 21a and 21b. Identification signal 21a, 7
1b are signals with the same value, and the reason why they are placed with two edges repeated in this way is to reduce transmission errors.
The reproduction device checks whether there is an error, and if there is an error, the identification signal without the error is used.

Following the identification signal 7Ikl, the digital luminance signal of the 1st H (1st H of the 1st field) is arranged as shown by Ll in Figure 4, and then the digital color difference signal of the crane 1 and stripe 2 of the 1NIH. are arranged as shown by 01 in the figure. In other words, YQ in the $4 diagram! , are the signals at the first and jllz sample points of the 1llH-th digital luminance signal, each of which is more than 8 bits, the upper bit of the same word is used to transmit the 211 points Y1 of the digital luminance signal, and the lower 8 bits are transmitted. One sample point Yo of digital luminance signal
is transmitted. In the same way as above, W, the 1st SW of the 1H digital luminance signal + the 6th os IIl from Mokugyo Y2,
, Mokugyo Y6o-7 are sequentially transmitted pair by pair.

Following the 1H-th digital luminance signal array L1 of 304 words in total, the 1H-th digital color difference signal is transmitted in an array as shown by 01.

Here, in FIG. 4, the first word of 01 is the 1st word of the 1nth group. # of the second digital color difference signal! 1 sample point (B-
Y)Q and (RY)o are arranged, respectively, (B7Y)o is arranged in the upper 8 bits K, and (RY)o is arranged in the lower S bit. 211 points (B-Y) of the Jllllth first digital color difference signal in the same m.

From the 15211th point (B-Y) 15. With the neck, IIl
Up to the 24th point (R-Y)l of the digital color difference signal (R-Yh!l+), each word consists of 16 bits, and
The upper 8 bits of the same word are (B, -Y)1 to (B-Y
)15+, lower 8 bits are (RY), ~(RY)1
Consists of 51. Therefore, 18 minutes Jgt and 2nd
The digital color difference signal is transmitted in a total of 152 words.

In this way, the first H digital luminance signal and J
After the lill and second digital color difference signals have been transmitted in the arrangement shown by Ll and ol, the liLzmth (1st H of the second field) digital luminance signal, 1st and 2nd digital color difference signals are transmitted.
Digital color difference signals are transmitted * lN4 in the figure -,
Y60B, Y2O2, Ytlo, Y411
@1 of the 5.2H digital luminance signal for each ij.
Second. Summary 1. The signal arrangement positions of the four irises sample points are shown.

Thereafter, in the same manner as above, after 1H worth of digital luminance signals are transmitted 2 sample points at a time, 18 minutes fl of the same scanning line,
The digital color difference signals of 1 and II2 constitute one word with the same sample points on both images and are sequentially transmitted, which is repeated for a total of one frame (57211 minutes). Matoi 4.
In the figure, C572 indicates the arrangement of the 572nd, H-th (g2/65 of stripe 2 field) digital luminance signal;
B-Y)86942, (R-'f)66942
is the 572nd H $1. Iris 2 digital color difference signal o
Indicates the placement position of the JItst sample point, and similarly CB-Y
)86943, (R-'i)8694!5 it
g 1!12 Indicates the placement position of Ij Honkigyo. When the transmission of the 572H digital luminance signal and the first and second digital color difference signals for one frame is completed in this way,
Next, as a fourth factor, as shown at 210 and 21d, the identification signal of the same -8 valley is repeatedly transmitted twice. Identification signal 210
．． The reason for repeatedly transmitting 21 (l) is the same reason as for the transmission of the identification signals 21a and 21b. 21m, 21b
This is to compare the contents with the first organ-specific signal shown by , and display the digital video signal that has been loaded into the memo IJICm on the playback device only when the two are the same.

In this way, as shown in FIG. 4, one frame of the digital video signal is 2@@, 1ts1 (=
4+152)X572+ll) word #1#c,
Followed (or approximately s, 51 (==〒55〒width x2@0
J31) When the digital video signal #I2 is further recorded, the switching circuit 15 is operated so that the signal format of the second digital video signal is configured as shown in FIG. In the same figure, the same reference numerals are given to the 4-count parts as in FIG.
The first field (2111H) consists of 65,214 words), L1'ilt shows the arrangement of the 1st H digital luminance signal, 01' and 02B6'F
ig I H auto WE 28 @ HI C) 211e
) f (') Based on the distribution of the 1 color difference signal, a digital luminance signal consisting of a total of 18 words for 1 nm is followed by a digital luminance signal consisting of a total of 16 words for the IH portion of the same scan. This is because the digital color difference signal of the species is transmitted by forming the same word with the same sample points on the screen for a total of 2 hours. 111 of the signal format as shown in FIG.
The digital video signal of No. 2 is supplied to the digital recorder 1- as required, and in this case is recorded following the digital video signal of the signal format shown in FIG.

In addition, in Figure 1, memo IJ "10." 110
The input digital color difference signal also has the same sampling frequency of 12 MHz and the same quantization number as the input digital luminance signal of the memory 9.
bit, and controlling the read address of memory 10.11, the sampling frequency is 47.2SKHs (also t!441K
Hg), a digital color difference signal with a quantization number of 8 bits may be extracted. However, in this case, it is necessary to remove high-frequency components □ from the video signal in advance in order to remove the aliasing noise tube generated by the low sampling frequency.

Next, to explain the recording system for recording the above-mentioned digital video signal together with the digital audio signal on a disk in chronological order, the diagram below shows a block system diagram of an embodiment of the main part of the main part of this method. . In the figure, the same components as in FIG. 1 are given the same reference numerals. Reference numerals 30, 31, and 32 are input terminals into which three channels of analog audio signals are input separately, and the three channels of analog audio signals include a signal for central sound localization. And F! Real localization of the central sound source and expansion of the listening range, which could not be achieved previously, can be achieved. Also 3
Reference numeral 3 designates a start signal input terminal, and reference numeral 34 designates an input terminal for a cue signal generated each time the music program of analog audio signals of the three channels is switched from a previous music program to another music tourogram.

Here, on the disk 4- to be described later, a digital signal with a sampling frequency of 4'7.25 KHg and a quantization number of 16 bits is recorded in one track in time series for four channels as the information amount for one channel. Then, the above 3
The analog audio signal of the channel is converted to D-conversion aSS.
Each channel has a sampling frequency of 47.25KH.
z, converted into a digital audio signal (PC!M audio signal) with a quantization number of 1@bit, and supplied to the signal processing circuit 31, and simultaneously reproduced by the digital recorder 1-. The sampling frequency is 47.2 with the signal format shown in @! lKH2, a digital video signal with a quantity of 1 s bits (furthermore,
Sampling frequency 41.2S with signal format as shown
KTits, a second digital video signal with a quantization number of 16 bits) is supplied to the signal processing circuit 31. A control signal generating circuit 3 is supplied with a start signal coming into an input terminal 33 and a cue signal coming into an input terminal 34, respectively.
Reference numeral 6 generates a control signal having a configuration shown in the figure below and supplies it to the signal processing circuit 3T. The control signal is conveniently used for position control (random access) of the BIC ARA 1 reproducing element, etc., as will be described later.

The signal processing circuit sya rearranges these 16-bit high-power digital signals and control signals of a total of 4 channels into parallel data into 1-column data, and
The digital signals of each channel are divided into predetermined intervals, interleaved, and time-division multiplexed. Then, a recording signal is generated by adding a code correction signal, an error code detection signal, and a synchronization signal bit indicating the beginning of a block (frame).

gym is a schematic example of one block (one frame) in the recording signal generated as a result of signal processing by the signal processing circuit 31. One block consists of 130 bits, and its repetition is The frequency is the same as the sampling frequency 47.2
It is 5KHg. BYNO is 10 indicating the beginning of the block
synchronization signal of fixed foot pattern of bit), ah-1~0
h-3 is the 16-bit digital audio signal of the above three channels, and ah-4Fi is the 161? 7. ), : indicates the multiplexing position of one word of the digital video 1 o signal, and P and Q shown in Figure 1 are signals for correcting 1@bit error code, for example, P = Wt e) W2 ■WseW4
111Q=T-W1■T-W269T-
Wse)"W4(2'). However, lll.

(3) In formula w1. w2. w3. w4 to ah-1~
Each digital signal of $6 bits of ah-4 (usually husband 4
(digital signals in different blocks), T is an auxiliary matrix of a given polynomial) 17x, corresponding to ct*FX☆
Bitwise modulo-2 addition is shown.

Furthermore, in Fig. 47, the error code detection signals of 0RC9 and 3 pits are ah-1 to ch-4, which are arranged in the same block.
P, QO%'7-)', for example, x 2 S + x S
This is the 23-bit remainder obtained when the can-bottom polynomial 1x'+x+t is used.
The signals from the bit to the Mt2s bit are calculated using the above-mentioned can bottom polynomial formula, and when the resulting remainder is zero, it is used to detect that there is no error. Ma-fcI
In Figure 1, the control signal (lr) is the control signal, and the signal bit data is distributed, and one bit is transmitted in one block. For example, all bits of the signal are transmitted in 126 blocks ( That is, the control signal consists of 126 bits.)

Therefore, when the rotation speed of the disk 4o is 1100 rpm, 30 I blocks are recorded and reproduced per disk rotation, so the above 126-bit pulse signal is
2S circular brass will be played during the rotation period.

FIG. 8 schematically shows -11 of the above-mentioned signal configuration. The total 126-bit control signal consists of a 42-bit first chatter code 0F-1, a 42-bit OS2 chatter code C! P-2 and a 42-bit time code TC. 1st chaf "Turcode 0F-1"
is an 11-bit quarter signal, a 4-bit mode signal, an S-bit chatter signal, a 12-bit chatter local address, and a signal from the mode signal to the chatter local address register. It consists of a 1-bit parity code obtained by adding bits modulo 2, and the second chapter code 0P-2 also differs only in the value of the synchronization signal, otherwise it is the same as 1-bit parity code in total. 1ter code 0P-
It has the same configuration and the same values as 1. The above mode signal is a signal indicating the type of 4-channel digital signal recorded on the disc 40), for example, "ttoO
J and IF 13-channel digital audio signals and 1-channel digital video signals are recorded, and when "1101" is recorded, 4-channel digital audio signals are recorded, and when "l"zlOJ is recorded, 2-channel digital audio signals are recorded. Two types of digital audio signals are recorded, and it is shown that two channels of digital audio signals and digital video signals are recorded.

The chatter signal is a signal indicating the eleventh position of the recorded music program from the signal recording start position on the disc 40. - 10,000, since the image identification code 22 in the identification signal 21 shown in FIG. If two or more still images to be played simultaneously are switched during playback, the value of the picture number identification code 22 and the value of the chatter signal are different from each other [1]. Furthermore, the chatter local address indicates the number of seconds since the respective first recording of each acoustic 10-gram.

Furthermore, the time code To shown in FIG.
Disk 40 uniformly with the mode signal in P-1, 0F-2
A 4-bit mode signal indicating the separation of the 4 channels of digital signals recorded on the disc 40 and the recorded music 1 on the disc 40.
A total of 16 bits of time identification code that indicates the 0g position as the total time from the signal recording start position, and a 4-bit time identification code that increases by - for each rotation of the disk 4o and indicates values from 0 to 14 as a two-way code. It consists of a track number code and a 1-bit parity code. The above time identification code is expressed in minutes and seconds, and its minimum unit is 1 second, but if the disk 40 rotates once at iIQOrpm, it will rotate 16 times per second. Therefore, even if the time identification codes have the same value, the position of the sound and electric 10-gram sickle can be differentiated for each revolution of the disk 40 using the track number code.

A digital signal of 130 bits per block shown in FIG. 1 is extracted from the signal processing circuit 31 in block units in sequential order, and is supplied to the next stage modulation circuit 3, where it is processed, for example, by a modified frequency Modulation (
For example, 7 MH
The carrier wave of g is frequency-modulated into a frequency-modulated wave signal. This frequency modulated wave signal is recorded on the disk 40 by the laser beam 8fP1 and the recording device 3 used.

When applying the disc recording method proposed earlier by Hondashi Peng, the above-mentioned recording device s"s will have the configuration shown in 1m. In the figure, the laser light source is 4%) The emitted laser beam is subjected to removal of drift and noise by the optical modulator 42, and then reflected by the reflecting mirror 4s and split into two beams by the half mirror 44Kl jl). At the optical modulator 945, the laser beam 1 is modified by the output frequency modulated wave signal of the modulation circuit 3 at the input terminal 4) and the third tracking side reference signal fpsK, which will be described later. The other split laser beam is sent to the optical modulator 4.
1, IIE1 or #'!, which will be described later, comes in alternately every rotation of the recording master 49 from the Kugata terminal 4I. j12 tracking mJ ilj reference signal fp1 or fp2
The modulated light beam is converted into the second modulated light beam by the change vI4.

The first modulated light beam is reflected by the reflecting mirror so and its optical path is changed, and the optical path is changed through the cylindrical lens it and the cylindrical lens 52. By passing through the information recording optical system (p) through the slit 53 and the convex lens 54, the light is formed into a rectangular shape Vcll on the original disk. On the other hand, the second modulated light beam is converted into a circular light KII shape on the recording master 4 by a tracking optical system consisting of a convex lens ss, a slit S@, and a convex lens 5T, and its optical path is changed by a rear reflecting mirror 58. .

The modulated light beams of the irises 1 and 2, each shaped into a desired shape, are combined on substantially the same optical axis of the polarizing prism S, then pass through the half mirror @0, and are transferred to the frism 61. The optical path is changed and the slit 62. Recorded lens 6s
On the recording master 411 on which the photosensitive agent layer 6S is formed on the glass substrate 64, the modulated light beam of RAID1 is focused in a rectangular shape indicated by 66, and the modulated light beam of tll is focused in a circular shape indicated by 61. It is forced to irradiate.

The recording source 114@ is disk-shaped and rotated for N periods at a constant speed], and the light reflected by the half mirror 6o is added to the signal monitoring system 68, and the source reflected by 1 rhythm 1 is Added to surveillance optical system@-. Recording source @4s Top 02 I [The interval between the modulated light beams is measured by the monitoring optical system @-], and the deviation is monitored by the signal monitoring system 6a.If the cylindrical lens s1 is moved in the vertical direction in the figure, According to this, I will carry out the shogunate.

Note - Master disk 4@Fi A stamper disk is created through a well-known iA mine shop process and a disk making worker@. On the disc 4o copied by this stamper board, the digital audio signals of the three channels described above and the digital video signal of the channel 01 shown in the signal format shown in the first part of the j11411 are sequentially block-by-block in the signal format shown in gya. A helical main track recorded as a bit string containing frequency modulated waves of the signal,
Approximately in the middle between the track center lines of adjacent main tracks, burst-like noises 1 of single-jiii 15 wave numbers exist in a band lower than the band of the above-mentioned frequency full wave, alternating every disk rotation period. and a sub-track recorded by intermittent bit strings of reference signals fp1 and fp2 for the tracking side of jI2, and further ICfpl,
The reference fps for tracking system of jK3 is recorded on the main track of the switching connection part of tp2. Further, this disc 40VC- does not have a tracking device for a playback needle, but has a different electrode function.

As described above, according to the method of the present invention, the digital color difference signals of the digital video signal 1H'', 4'fitv4'''9, and 1H of the digital video signal q), which are recorded together with the digital audio signal, are recorded together with the digital audio signal. Since the color difference signal components of the same sample point on the iris plane are recorded in the same word, the iris 1 and 2 digital color difference signals are synthesized alternately in an i-series manner. , Gradually decrease the display area of the first still image that is initially displayed on the entire screen on the playback device described later - 1, Gradually increase the display area of the second still image and finally edit. When changing the image to display only the static iikIgII of No. 2, it can be done without deteriorating the image quality. (Mokugyo) is shifted by only two positions, but the image is not distorted, and the scan line of 1 field and $12. Since each image information 'f with the scanning line of y yield is transmitted and recorded alternately from above on the screen, the conversion of the number of scanning lines described later can be easily performed. Note that the digital luminance signal and the first and second digital color difference signals may be alternately transmitted and recorded in IH portions as in the embodiment, but the Ii degree is such that the change in the side of the image is visually permissible. For example, it is possible to alternately transmit and record several R minutes per degree.

Next, a description will be given of an apparatus for reproducing digital signals recorded on a disk according to the method of the present invention. FIG. 11E10 shows a 10-step system diagram of an example of a digital signal reproducing apparatus. Among the same, the disk 40 is a turntable (not shown)
It is placed on top and rotated synchronously with Harpm. As shown in FIG. 11, the disk 4.7o has a track width TWe, which is formed by repeating the flat direction 1o and the pit 11; is repeated a thousand times for reference! No. fp1 recording sub-track, flat 1il
As described above, the tracking control reference signal fp2 recording track, which is formed by repeating iT-o and dot 13, is formed in the nine ways described above.
The bottom 114b of the regeneration needle 74 is made to slide on the 00 surface.

The regenerated needle T4 is as shown in No. 1011,
A permanent magnet 7a is fixed to one end of the camp prepper 75, and a permanent magnet 7a is fixed to the base S of the other end of the camp prepper 75. The portion of the cantilever 15 to which the permanent magnet 1@ is fixed is surrounded by a tracking coil 11 and a jitter correction coil T. which are fixed to the reproducing device. Since the left and right coil parts of the jitter correction coil rsFs are fully wound in the same phase, they simultaneously act as attraction and repulsion to the permanent magnet 'T6, depending on the polarity of the jitter correction signal. Cantilever 1s has 400 discs? By moving directly in the tangential direction of the disk, it is possible to correct jitter caused by the deflection or eccentricity of the disk 400. Further, the tracking coil IT generates a magnetic field in a direction perpendicular to the magnetic field direction of the permanent magnet 76, and the tracking coil IT generates a magnetic field in a direction perpendicular to the direction of the magnetic field of the permanent magnet 76. or in one direction, and with an exclusive displacement amount depending on the size.

The electrode 741L shown in FIG. - a resonant circuit whose resonant frequency changes in response to changes in capacitance formed between the disc 40 and the intermittent bit string; a circuit which applies a constant frequency to this resonant circuit; The big array 1 consists of a circuit that detects a high frequency signal whose amplitude changes according to the change in the capacitance of the circuit, and a circuit that preamplifies the high frequency signal (reproduction signal) detected by this width detection. circuit 8
0) Salt 9 The output high frequency reproduction signal is FMl[1l
ii1 circuit 81, where the main information signals of the main track (in this case, a digital audio signal and a video signal synthesized in time series into 9 digits) are respectively demodulated -1, and a part is branched and used for tracking. Servo circuit II
supplied to

The tracking servo circuit 71t; detects the tracking control reference signal f −f for the first to rattan 3 from the reproduced signal.
are frequency-selected and extracted, and both reference signals f1. f
A tracking error signal obtained by differentially amplifying the envelope detection output of No. 2 is output to the tracking coil TT. However, since the recording positional relationship of 'p1s' and P2 with respect to the main track changes every rotation period of the disk 40,
The tracking polarity is switched every rotation period of the disk 40 by the switching pulse generated based on the detection output of the tracking control reference signal fp.

Note that the tracking servo circuit 71112 input terminal I2
When a kick instruction signal is received, the regenerating needle T is activated accordingly. 4) 1) The tracking coil 11 is forcibly moved in the track direction by the rack pitch or more.
to drive.

-1, FMl[11 circuit 81, the demodulated digital signal outputted from H is applied to the decoder 83, where it is MUM decoded and made into a time-series composite signal with the signal format shown in FIG. The beginning of the signal block is detected based on signal beep) 8YNO, the single column signal is converted into a parallel signal, and further 9 detection is performed. Only when an IA error is detected, error correction signals P and Q are used to correct the error)
Correct restoration of the signal is performed. In this way, correction and restoration are performed as necessary, and #A9 is removed and the signal arrangement is returned to the original order before interleaving.
Among the digital signals of 4 bit channels, the digital audio signals of channel II bits of each channel of 3 channels are converted into analog audio signals by the DM converter in the decoder 3, and then sent to the output terminal @4. They are output to @s and $6 separately. The Maku Big A1 control signal is connected to a predetermined circuit (not shown) for high-speed position search, etc.
Output to.

-1, jl! The digital video signal in the signal format shown in FIG. The number is converted from 625 official equation to 525 official equation. Here, as described above, the digital video signal relates to the image information of the scan line 31E' in which the scan of the first field, the scan line and the scan of the second field are respectively and each other selected in order from the top of the tiiim. 69, and the digital luminance signal and the first and second digital color difference signals are alternately reproduced by IH; b
On the other hand, when the intra-frame line interpolation method is used, the circuit 8T can be constructed by simple calculations, and the number of scanning lines can be easily converted.

As described above, the scanning line number conversion circuit 8 is a necessary circuit for a reproduction device that reproduces the TFi input signal as an analog color video signal conforming to the NT800,000 format with 525 scanning lines, and here, this circuit 81 is included. 81 CAM Manshiki or PA with 62 seconds of scanning lines
It is not necessary when playing back as an analog color video signal conforming to the L-man format. Of course, in this case, a changeover switch may be provided to change the output of the scanning line number conversion circuit-1, and this may be changed depending on the reproduction method. ) issued scan - number 6
The 21-way digital video signal is transferred to switch circuit II.
supplied to

-1. The nine digital video signals output from the decoder @3 are supplied to the synchronization signal detection circuit 8I, where they are transmitted at the beginning of one frame (or one field) of the digital video signal. A synchronizing signal Ha, 21b is detected. This synchronization signal is 2sm.

20b is transmitted in a 32-bit fixed pattern as shown in Figures 1I4 and 2I. Synchronous signal detection circuit/
− is the detection signal control circuit when this synchronization signal is detected.
Supply to O. Further, the digital video signal taken out from the decoder 3 is supplied to an identification signal detection circuit 91 and a memory write controller s2, respectively. Identification signal detection circuit 11it manual recording in digital video signal 3
Identification signals 21 (21a to 21d) shown in Figs.
This circuit detects the detection signal and outputs the detection signal to the control circuit 10.

? The 1lIIia circuit 90 is supplied with the above-mentioned detection signals and the input electronics 93, a playback mode signal intended by the user of the friend playback device, a type designation signal, etc., which are discriminated and decoded to be sent to the memory write controller 92 and the switch. circuit a
III controls the sl switching circuit IIT, etc. 94 and 115 are memories each having a storage capacity for one frame, and the output digital video signal of the scanning line number conversion circuit 11F is selectively outputted by the switch circuit $- to either memory s4 or 11s-1. Here, the write control signal from the memory write controller @2 is written. This 1
Here, the digital video signal of Rattan 1 in the signal format shown in Figure 4 and the second digital video signal in the signal format shown in Figure S were proposed by the present applicant in Japanese Patent Application No. 5FT6.1214. At least at the start of recording the digital audio signal of the music program, tj
If the recorded digital video signal of JllE2 is recorded so that the end points of *M are approximately the same, the control circuit 5o
Fs When the synchronization signal of the first digital video signal and the identification signal tube are detected, the switch circuit 88 is connected from the terminal a (or b) to the other terminal b (or a).
The first digital video signal transmission period (approximately 5.52 seconds or approximately L11
j8 of the same color static image that is subsequently played back (seconds)
When a digital video signal of 2 is received, the picture number identification code 22 in the identification signal is 4-69 with the value that was received immediately before, and the 1 high type identification code 2
3 is the second digital bit signal, and while holding the connection state mt image of the switch circuit 8, write the memory □ Control the controller @ 2 to write the memory 94 or 9.
Do not write the digital video signal of sKjll12. Therefore, among the output signals from the scanning line number conversion circuit 11, only the first digital video signal is written into the memory s4 or IIs, and the second digital video signal of the same image name is not written.

-1. If the 10th digital video signal is started in the middle (for example, during random access), the Ichigogo identification code 22 in the identification signal detected by the identification signal detection circuit $1 is Since it is different from the previous value,
The switching circuit 10ts determines this and switches the switch circuit 8s to write the second digital video signal into the memory 94 or 95. Therefore, normally one frame of the first digital video signal is written to the memory s4, then one frame of the reproduced first digital video signal is written to the memory 95, and then the first Only the digital video signal is stored in memory for each frame 94.9
However, when the synchronization signal and identification signal of the first digital video signal are not reproduced, the second digital video signal with the ms number of Oka is stored in the memory I4 or It will be written to S.

Memo IJ I 4 and memory ss write digital video signals alternately, and simultaneously read out the written digital video signals based on the start-up control signal from the memory read controller and synchronization signal generation circuit 116. At the same time, jitter associated with playback is also corrected.

Here, the digital luminance signal in the digital video signal @1 from memory s4 or ss has a sampling frequency of 12M.
The first and second digital color difference signals are read out at a unifying frequency of 3 MHM and 8 bits of quantization, and are supplied to the switching circuit 117. - When outputting the memory 94 or ss in which the second digital video signal is written, for example, the digital luminance signal is output with a sampling frequency of 8 MHz and a quantization number of 1 bit, and two types of digital Each of the color difference signals is read out with a sampling chest wave number of 1.5 MHg, 11 quantization numbers, and 1 bit, and is supplied to a switching circuit 91, respectively.

The switching circuit s1 is supplied with the control signal of the control 11 circuit (O) and the synchronization signal from the memory read controller and the synchronization signal generation circuit 96, respectively, and receives the digital luminance signal read from the memories s4 and 9s and the digital luminance signal of 2111. When selectively outputting digital color difference signals or gradually switching the still image gI tube, each digital signal outputted from both memory $4 and @i is specified by the time identification code 26 of the effect, etc. The circuit has a circuit configuration that multiplies it by a coefficient whose value changes with speed and then mixes and outputs the result.

Among the three types of digital signals taken out from this switching circuit-1, the digital luminance signal is supplied to the DM conversion 6ms, one of the two types of digital color difference signals is supplied to the DA converter s port, and the other is supplied to the Dm converter 100.

As a result, an analog luminance signal is extracted from the DA converter 8 and supplied to the encoder 101, and a color difference signal (B- Y), (R-
't) are respectively extracted and supplied to the encoder Sol. Encoder 101Fi These three types of analog signals, memory read controller, and synchronization signal generation circuit
A horizontal synchronization signal, a superimposition synchronization signal, a color burst signal, etc., and a color video signal conforming to the MTBO standard are generated and output to the playback output terminal 102. This M780
The universal color video signal is reproduced and displayed as a high-quality color still image by a color television receiver (not shown), and the audio is output from output terminals -4, @I and -6 to be reproduced and sounded. It is used as supplementary information for music listening by the signal listener.

Next, the screen switching operation will be explained. Usually, memory I
Displays a color still image of the digital video signal being read from 4 (or -S), and completes writing of one frame to memory S (or 14) during this display period. Then, another digital video signal is inserted into the information of the reproduced audio signal IFKPi, and the entire screen is instantly switched to this color still image. If you want to switch from the currently displayed color still image to another color still image with special effects such as a fade-in,
The control circuit IIO determines the code 2s, 2. shown in the SSO, and gradually decreases the value of the coefficient to be multiplied by the digital video signal being displayed from the memory 4 (or Is) based on it. On the other hand, Memory II (or I 4
), the value of the coefficient calculated by the digital video signal Kll to be switched is gradually increased, and these digital video signals are multiplied and output from the switching circuit s1], thereby producing a special effect. Memo from t4! It is possible to switch to a color still image of the digital video signal read from jjlj (or 114).

Furthermore, if you want to switch to another rtm@ from the top of the screen,
The N control circuit sO is code 2s shown in FIG.

26 tube is read, and based on the readout from the memory 4 (or Is) during a writing operation, for example, the readout output is cut off and the circuit s1? Through the DM converter S@~100K are supplied respectively. As mentioned above, the digital luminance signal and the two types of digital color difference signals are each one
Since the digital luminance signal and the 281 digital color difference signals are transmitted alternately with a shift of H minutes (or several H minutes), in other words, the digital luminance signal and the 281 digital color difference signals are transmitted in approximately the same time zone, so the above readout output signal is displayed on the screen. In this case, one color still image can be gradually changed from above to another color still image with almost no loss in image quality. Note that the images can also be replaced from the left (or right) to the right (or left) of the - plane.

next! The continuity of the force shown is required. i & statues, for example only sheet music! The operation in case I is shown will be explained. On the disk 40, a 1-gram digital video signal of the music to be played is recorded, but a large number of ii
When displaying the entire score sequentially on the i-side, the digital video signal of Hata San is recorded intermittently, and other types of digital video signals (for example, performers, scenery, etc.) are recorded in between. ing. Therefore, if this disc 40 is played back as is, the image that changes after displaying the music score of the next page will not be the next page O score but another ilm that was recorded next.
Therefore, in this case, externally specify the image channel for playing only the musical score from the 9IJ image content printed on the case or jacket for storing the disc 40f, and input the specified signal to the input terminal 11. is supplied to the control circuit 9, and the p identification signal detection circuit 1 is compared with the picture type classification code 24 in the identification number 1 from the p identification signal detection circuit 1. only memory s 4
．． Writes and produces ISKN raw digital video signals.

Therefore, the memory at this time is $14. I! By reproducing the read output signal of i), only the musical score can be reproduced. The same applies to the case of one other type. Of course, it is also possible to reproduce the color still images with the application written on the disc 40 (in this case, even if the
- comparison with code 24 is prevented).

In addition, Fig. 4, s5i! 211L ~ 21 (As shown by l, the identification signal is one frame or 11 fields worth of digital video information. Since the same content is recorded before and after the digital video information, the values of both are recorded at the same time during playback. If not, the switching operation of the switching circuit IT is disabled (by the output signal of the switching circuit sO), and the memory s4 (or II
) is not supplied to the tDA converters-I to 100, and the output tube of the memo +715 (or 94) transmitted immediately before is selectively output. This makes it possible to prevent disturbances in the reproduced image caused by needle skipping and the like.

Also, for some reason, the memory 114. If the digital video signal supplied to the IIs is shifted by 9 by one word, the sampling point will be shifted by two points (for example, XQ or Y4 is inserted at Y2 in the crane 4 diagram), but the digital luminance signal and the digital The color difference signals are recorded and reproduced alternately for each IH, and the two types of digital color difference signals are each recorded and reproduced as signal components of four sample points in the same word, so the luminance signal and the color difference signal Normally, playback 1
Since it does not appear on 1111iI, there is almost no problem.

Next, another example of a playback device *-1! To clarify, rattan 121
i is another example of a mansion of a digital signal reproducing device; q) shows a block system diagram; this model has a key feature in that it has a single Dm conversion unit for digital-to-analog conversion of two types of digital color difference signals; That is, ', input terminal 103.
1 (14 receives two types of digital color difference signals that have passed through the switching circuit IT and is supplied to the switching circuit 10S, □
Here, 〒-10,000 is selected and output. Memory read controller and synchronization signal generation circuit input to input terminal 106 --
The nine switching signal generates a switching signal in synchronization with the blade synchronization signal of l!
1107, and the switching signal is supplied to each of the one-switch circuits... and 1osi, and these are switched in conjunction with each other. As a result, the input terminal 10 from the switch circuit 105
The 6th 10th digital color difference signal from B and the second digital color difference signal from the input terminal 104 are alternately supplied to the DM converter 10 for each signal component of the sample point, where they are digital-to-analog converted. Ru.

Therefore, the color difference signal (B-Y) (R-Y) is outputted from the DMU converter 108 alternately KMRjl every sample period and supplied to the switch circuit 10s. (B-Y) goes to the exit car 1.
Further, the color difference signal (R-Y) is output to the output terminal 111,
The signal is supplied together with the luminance signal to the encoder 101 shown in the diagram. The S-conversion frequency i of the two types of digital color difference signals supplied to the above input terminals 101 and 104, and that of the digital luminance signal 1MHg or 1. iMH
Since it is low at g, the color difference signal (B-
Y) and (RY) can also be switched easily.

In the above embodiment, the number of scanning lines of the video signal is @2s.
Although it was composed in this book, the signal recording format of digital audio discs such as Di-Airi 4O is common throughout the world and can be played universally, and the PAL universal system j 8
This is to ensure that there is no shortage of information when playing back a video signal that complies with KQM Manshiki. In this article, we have explained the application to the disk recording system and playback device previously proposed by the present applicant, but the application is not limited to this, and the tracking guide #I
The present invention can also be applied to a disk in which a capacitance change is readable, and a disk in which previously recorded signals are read (by a light beam). Also, if the television receiver has R,
When the three primary color signal input terminals of G and B are provided, a matrix circuit is used in place of the encoder 101, and thereby the three primary color signals R and G are input from the luminance signal Y and the color difference signals (RY) and (B-Y). , B&C conversion and supplying them separately to the above-mentioned input terminals, the television receiver can output still images of extremely high quality. Furthermore, the color difference signal H (G
-Y) and (R-Y) or (B-Y) may be used as a combination, and it is also possible to use an engineering signal, a Q signal, or three primary color signals.

As mentioned above, the digital signal recording system according to the present invention is
The luminance signal and color difference signal of the color still image information to be recorded are each converted into digital pulses separately, and a di'''' numbness signal and two types of 2 O'' color difference signals are generated respectively, and a digital jIII NIL signal is generated. The two types of digital color difference signals are transmitted together and alternately for each several or fewer scanning lines, and the two types of digital color difference signals are transmitted by combining the signal components of the same color on the screen. A time-series synthesized digital video signal tube is generated for each signal to be transmitted in the same word, and this time-series synthesized digital video signal tube is used to digitally pulse modulate the audio signal of the audio information to be recorded and obtain nine digital audio signals. Since the display area of the first still image is gradually decreased by 10,000 ms, when this recording medium is played back, the display area of the first still image is gradually decreased by 10,000 ms. By increasing the display iii product, the final result is 2
IIK for image changes such as displaying only a still image of
This can be done suitably with almost no deterioration in image quality, and even if the time series differs by one word, the image distortion can be reduced by shifting by only 2 pixels (sample points) on the screen. Moreover, the image distortion is the rounding that appears on the side w4 of the playback i1 side, and normally there is no problem with the 6C on the playback side.
One of the two types of digital color difference signals is placed in the upper bits of the word, and the other is placed in the lower bits of the word. Similarly, image distortion can be eliminated, and the digital video signal described in K11l is
Since the scan-0 image information of the field and the 1III document information of the scanning line of the second field are constituted alternately and sequentially from the 1III information of the scan on the surface, the number of scans is It has a number of advantages, such as being able to easily handle natural disasters, and since the digital video signal is transmitted using the component encoding method, the scanning line number conversion circuit can be constructed by simple calculations.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing an embodiment of the II part of the method of the present invention, s2 is a diagram showing the transmission period in a video signal of image information recorded by the method of the present invention, and Figure 3 is a diagram showing the transmission period of the video signal of image information recorded by the method of the present invention. The diagrams schematically showing the configuration of one embodiment of the identification signal recorded by the method, Figure 4 and Figure IIs are decoys showing detailed examples of the signal format of the digital video signal recorded by the method of the present invention, respectively. Figure 1 is a block system diagram showing an embodiment of other main parts of the present invention. Figure 8 is irises 1
1 schematically showing an example of the configuration of the control signal in m, the summary diagram is a system diagram showing an example of the configuration of the recording storage shown in diagram O, #E1
0g1iil is a block system diagram showing an example of a digital signal generation device, and J111 is an enlarged perspective view showing an example of the sliding situation between a disc-shaped recording medium and a playback needle. 111211rj
FIG. 3 is a block system diagram showing the main parts of another example of the digital signal generating device. 1... video signal source, 2.・TV synchronization signal generation tin,
3... Matrix circuit, 4. S, @, 3ft,...MuD converter, 9. 10. 11. 11. I 4.
@l!・/%U, 15.91...Switching circuit, 1
1...Identification signal generation Ij 1m...Digital recorder, 21,211L~71 (1...Identification signal, 22
・・・Gataku Homago identification code, 23...Image type identification code, 24...Picture type iron code 4 code, 2! ...Effect type identification code, 2I...Effect time identification code,
S to I2...Analog audio signal input terminal,
3... system! n signal generation circuit, 3T...signal processing m circuit, SS...recording device, 40. ．． 2 disc-shaped recording medium (
disk), 41...laser light keyaki, 42, 41, 4
T...Light modulator, 4$...Recording source-1ss...Polarizing prism, IO...Half mirror, 61...1 rhythm, 74...Reproduction needle, 14a...11.1 −・・・
Permanent magnet, 1-...Tracking servo circuit, -〇・
...Pickler 1 circuit, mouth 3...decoder, -4-8
1...Analog audio signal output terminal, -1...Scanning line number variable ILK circuit, --, tos, to-...
Switch circuit, @S, synchronous signal detection circuit, sO...
劃-(9) Road, sl...m separate signal detection circuit, 93...
Image type specification flaw code change input terminal...~100. 10! l・
...DA change aS, 101... Encoder, 102...
・Analog video signal output terminal. Figure 9 '5' = 10 +, i1

Claims (1)

[Scope of Claims] (11 Digital pulse modulation of the luminance signal and the color difference signal of the color still image lightning information to be recorded is performed separately, and the digital luminance signal and the digital color difference signal of 211 are respectively outputted. The luminance signal and the digital color difference signal are transmitted alternately for each of several or fewer scanning lines, and the two types of digital color difference signals are signals of the same sample point on the screen. Time-series synthesis of signal formats in which components are transmitted using the same word for each tube
generating a digital video signal, and recording the time-series synthesized digital video signal on a recording medium in a time-series manner together with a digital audio signal obtained by digital pulse modulating an audio signal of audio information to be recorded. Digital signal recording method. (The two types of digital color difference signals in which the signal components of the same sample point on the 21-screen are each transmitted in the same word are:
-One is placed on the upper bit side of the above word, and the other is placed on the lower bit side of the above word.1
% mold according to claim 1. (all) The digital signal according to Section 1 or Section 2 of the Patent Requested Series, characterized in that the 1-word transmission period of the digital video signal is equal to the reciprocal of the sampling frequency of the digital audio signal. Recording method: (41) The digital video signal is the first field.
Any one of claims 1 to 3, characterized in that the i* information is constructed alternately and sequentially in time series from the image information of the upper and upper scanning lines on the screen. The digital signal recording method according to item (1) above. □ (5) The number of scanning lines of the luminance signal and the color difference signal of the color still image lightning information to be reproduced is 1125, as described in any one of claims 1111 to 4 of the scope of claim O. digital signal recording method.